<template>
  <div class="app-container">

    <!-- 查询和其他操作 -->
    <div class="filter-container">
      <el-input
        v-model="listQuery.goodsId"
        clearable
        size="mini"
        class="filter-item"
        style="width: 200px;"
        placeholder="请输入商品编号"
      />
      <el-button
        v-permission="['GET /admin/groupon/list']"
        size="mini"
        class="filter-item"
        type="primary"
        icon="el-icon-search"
        @click="handleFilter"
      >查找</el-button>
      <el-button
        v-permission="['POST /admin/groupon/create']"
        size="mini"
        class="filter-item"
        type="primary"
        icon="el-icon-edit"
        @click="handleCreate"
      >添加</el-button>
      <el-button
        :loading="downloadLoading"
        size="mini"
        class="filter-item"
        type="warning"
        icon="el-icon-download"
        @click="handleDownload"
      >导出
      </el-button>
    </div>

    <!-- 查询结果 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      size="small"
      element-loading-text="正在查询中。。。"
      border
      fit
      highlight-current-row
    >
      <el-table-column
        align="center"
        min-width="80px"
        label="商品ID"
        prop="goodsId"
      />

      <el-table-column
        align="center"
        min-width="200"
        label="名称"
        prop="goodsName"
      />

      <el-table-column
        align="center"
        property="picUrl"
        label="图片"
      >
        <template slot-scope="scope">
          <img
            :src="scope.row.picUrl"
            width="40"
          >
        </template>
      </el-table-column>

      <el-table-column
        align="center"
        min-width="80px"
        label="团购优惠"
        prop="discount"
        sortable
      />

      <el-table-column
        align="center"
        min-width="80px"
        label="团购要求"
        prop="discountMember"
      />

      <el-table-column
        align="center"
        min-width="120px"
        label="开始时间"
        prop="addTime"
      />

      <el-table-column
        align="center"
        min-width="120px"
        label="结束时间"
        prop="expireTime"
      />

      <el-table-column
        align="center"
        min-width="150px"
        label="操作"
        class-name="small-padding fixed-width"
      >
        <template slot-scope="scope">
          <el-button
            v-permission="['POST /admin/groupon/update']"
            type="primary"
            size="mini"
            @click="handleUpdate(scope.row)"
          >编辑</el-button>
          <el-button
            v-permission="['POST /admin/groupon/delete']"
            type="danger"
            size="mini"
            @click="handleDelete(scope.row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改对话框 -->
    <el-dialog
      :title="textMap[dialogStatus]"
      :visible.sync="dialogFormVisible"
    >
      <el-form
        ref="dataForm"
        :rules="rules"
        :model="dataForm"
        status-icon
        label-position="left"
        label-width="150px"
        style="width: 500px; margin-left:50px;"
      >
        <el-form-item
          label="商品ID"
          prop="goodsId"
        >
          <el-input v-model="dataForm.goodsId" />
        </el-form-item>
        <el-form-item
          label="团购折扣金额"
          prop="discount"
        >
          <el-input v-model="dataForm.discount" />
        </el-form-item>
        <el-form-item
          label="团购人数要求"
          prop="discountMember"
        >
          <el-input v-model="dataForm.discountMember" />
        </el-form-item>
        <el-form-item
          label="过期时间"
          prop="expireTime"
        >
          <el-date-picker
            v-model="dataForm.expireTime"
            type="datetime"
            placeholder="选择日期"
            value-format="yyyy-MM-dd HH:mm:ss"
          />
        </el-form-item>
      </el-form>
      <div
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="dialogFormVisible = false">取消</el-button>
        <el-button
          v-if="dialogStatus=='create'"
          type="primary"
          @click="createData"
        >确定</el-button>
        <el-button
          v-else
          type="primary"
          @click="updateData"
        >确定</el-button>
      </div>
    </el-dialog>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="listQuery.page"
      :limit.sync="listQuery.limit"
      @pagination="getList"
    />

    <el-tooltip
      placement="top"
      content="返回顶部"
    >
      <back-to-top :visibility-height="100" />
    </el-tooltip>

  </div>
</template>

<script>
import { listGroupon, publishGroupon, deleteGroupon, editGroupon } from '@/api/business/groupon'
import BackToTop from '@/components/BackToTop'
import Pagination from '@/components/Pagination' // Secondary package based on el-pagination
import { isInteger } from '@/utils/validate'

export default {
  name: 'GrouponRule',
  components: { BackToTop, Pagination },
  data() {
    return {
      list: [],
      total: 0,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 20,
        goodsId: undefined,
        sort: 'add_time',
        order: 'desc'
      },
      downloadLoading: false,
      dataForm: {
        id: undefined,
        goodsId: '',
        discount: '',
        discountMember: '',
        expireTime: undefined
      },
      dialogFormVisible: false,
      dialogStatus: '',
      textMap: {
        update: '编辑',
        create: '创建'
      },
      rules: {
        goodsId: [{ required: true, message: '商品不能为空', trigger: 'blur' }],
        discount: [{ required: true, message: '折扣金额不能为空', trigger: 'blur' }, { validator: isInteger, trigger: 'blur' }],
        discountMember: [{ required: true, message: '团购人数不能为空', trigger: 'blur' }]
      }
    }
  },
  created() {
    this.getList()
  },
  methods: {
    getList() {
      this.listLoading = true
      listGroupon(this.listQuery).then(response => {
        this.list = response.data.data.items
        this.total = response.data.data.total
        this.listLoading = false
      }).catch(() => {
        this.list = []
        this.total = 0
        this.listLoading = false
      })
    },
    handleFilter() {
      this.listQuery.page = 1
      this.getList()
    },
    resetForm() {
      this.dataForm = {
        id: undefined,
        goodsId: '',
        discount: '',
        discountMember: '',
        expireTime: undefined
      }
    },
    handleCreate() {
      this.resetForm()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    createData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          publishGroupon(this.dataForm).then(response => {
            this.list.unshift(response.data.data)
            this.dialogFormVisible = false
            this.$notify.success({
              title: '成功',
              message: '创建团购规则成功'
            })
          }).catch(response => {
            this.$notify.error({
              title: '失败',
              message: response.data.errmsg
            })
          })
        }
      })
    },
    handleUpdate(row) {
      this.dataForm = Object.assign({}, row)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    updateData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          editGroupon(this.dataForm).then(() => {
            for (const v of this.list) {
              if (v.id === this.dataForm.id) {
                const index = this.list.indexOf(v)
                this.list.splice(index, 1, this.dataForm)
                break
              }
            }
            this.dialogFormVisible = false
            this.$notify.success({
              title: '成功',
              message: '更新团购规则成功'
            })
          }).catch(response => {
            this.$notify.error({
              title: '失败',
              message: response.data.errmsg
            })
          })
        }
      })
    },
    handleDelete(row) {
      deleteGroupon(row).then(response => {
        this.$notify.success({
          title: '成功',
          message: '删除团购规则成功'
        })
        const index = this.list.indexOf(row)
        this.list.splice(index, 1)
      }).catch(response => {
        this.$notify.error({
          title: '失败',
          message: response.data.errmsg
        })
      })
    },
    handleDownload() {
      this.downloadLoading = true
      import('@/vendor/Export2Excel').then(excel => {
        const tHeader = ['商品ID', '名称', '首页主图', '折扣', '人数要求', '活动开始时间', '活动结束时间']
        const filterVal = ['id', 'name', 'pic_url', 'discount', 'discountMember', 'addTime', 'expireTime']
        excel.export_json_to_excel2(tHeader, this.list, filterVal, '商品信息')
        this.downloadLoading = false
      })
    }
  }
}
</script>
